On July 24, 2026, Mingjie engineers were installing the waste plastic to diesel plant in Vietnam. The complete waste plastic to diesel system consists of two main units: plastic pyrolysis system and pyrolysis oil distillation system. These are key industrial equipment for solving plastic pollution and developing alternatives to fossil fuels.
The waste plastic to diesel plant offers a technological path that combines environmental value with economic potential. Through pyrolysis and refining processes, it converts waste plastics into high-value diesel fuel. This waste plastic into diesel conversion technology is moving from the laboratory to large-scale industrial application, becoming an important direction in the circular economy.
Core Structure of Waste Plastic to Diesel Plant
A complete waste plastic to diesel plant typically includes the following core systems: feeding system, pyrolysis reactor, condensation and oil-gas separation system, distillation and refining system, slag discharge system, exhaust gas treatment system, and PLC control system.
Feeding System: Employs a screw feeder to achieve closed-loop feeding, preventing air ingress and potential safety hazards.
Pyrolysis Reactor: A rotating reactor with an external heating chamber to ensure uniform heating of the material.
Condensation and Oil-Gas Separation System: A horizontal composite condenser with indirect cooling via circulating cooling water, rapidly liquefying the mixed oil and gas. A buffer tank and oil-water separator separate free water from crude oil, preventing water from entering the reactor.
Distillation System: Consists of a vacuum distillation reactor, heating device, negative pressure unit, fractionation tower, and condensate collection tank. Low-temperature fractionation under negative pressure precisely cuts the diesel fraction.
Refining Unit: Includes pickling tank, alkali washing tank, and adsorption filter, used to remove sulfides, colloids, and pigments from pyrolysis oil.
Solid Residue Discharge System: Water-cooled, sealed, and automatically discharges residual carbon black from pyrolysis, eliminating dust pollution.
Tail Gas Treatment System: The combustion flue gas from the reactor sequentially passes through dust removal, spray washing, and activated carbon adsorption purification systems. Particulate matter, VOC, and dioxin emissions all meet domestic and EU environmental standards.
Intelligent Control System: Precisely controls temperature, pressure, and feed rate to ensure long-term continuous operation.
With breakthroughs in continuous pyrolysis technology and intelligent control systems, coupled with the ongoing global demand for carbon reduction and a circular economy, the plastic pyrolysis recycling industry is entering a period of opportunity for large-scale development. Waste plastic to diesel plant is not only a key to solving “white pollution,” but also a bridge connecting waste management and clean energy supply.
